6460142591 has 4 divisors (see below), whose sum is σ = 7383020112. Its totient is φ = 5537265072.

The previous prime is 6460142587. The next prime is 6460142639. The reversal of 6460142591 is 1952410646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1952410646 = 2 ⋅976205323.

It is a cyclic number.

It is not a de Polignac number, because 6460142591 - 2² = 6460142587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6460142531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461438750 + ... + 461438763.

It is an arithmetic number, because the mean of its divisors is an integer number (1845755028).

Almost surely, 2^6460142591 is an apocalyptic number.

6460142591 is a deficient number, since it is larger than the sum of its proper divisors (922877521).

6460142591 is an equidigital number, since it uses as much as digits as its factorization.

6460142591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922877520.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6460142591 is about 80375.0122301701. The cubic root of 6460142591 is about 1862.4331850331.

The spelling of 6460142591 in words is "six billion, four hundred sixty million, one hundred forty-two thousand, five hundred ninety-one".